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Date:      Wed, 6 Dec 2000 17:42:21 +0300
From:      Zherdev Anatoly <tolyar@mx.ru>
To:        Mike Meyer <mwm@mired.org>
Cc:        bright@wintelcom.net, questions@freebsd.org
Subject:   Re: USB cd-writer
Message-ID:  <200012061442.RAA92977@geisteskrank.demos.su>
In-Reply-To: <14894.16577.368668.18147@guru.mired.org>
References:  <31580090@toto.iv> <14894.16577.368668.18147@guru.mired.org>

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On Wed, 6 Dec 2000 07:36:01 -0600 (CST)
Mike Meyer <mwm@mired.org> wrote:

MM> All you should need are scbus and cd (unless cd needs da). ahc and
MM> pass aren't required, though pass is handy for lots of things. What
MM> does your dmesg report as attached to scbus?

On scbus only my Adaptec SCSI controller ahc0. Module pass need for camcontrol.

MM> In more detail, SCSI is both a set of commands and a physical spec. In
MM> recent versions of the standard, this separation has been made
MM> explicit. Some of the USB devices that look like disks use the SCSI
MM> command set over a USB physical layer (I believe there's a standard
MM> for such in the works as well). You need the scbus stuff to talk to
MM> those. Of course, *some* of the USB devices use the ATA command set. I
MM> have no idea what it takes to get one of those working.

It's look like that HP 8220e use ATA commands. Umass don't look it. And on scbus only ahc :(


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